Window-fastener.



H. ZOTZ& A. GRIESSL. WINDOW FASTNER.A

APPLICATION man DEc.11.1913.

1,174,374. A ramena-,ed Mar. 7, 1916.

WINDOW-FASTENER.

Specification of Letters Patent.

Patenten iiiar. 7, i916.

Application inea December 11, 1913. seriai No. 805,991.

To all wwm it may concern.'

Be it known that we, HUBERT Zo'iz and ALois Gninssn, both citizens of the Empire of Austi'iaeHungary, and' residing at Zug, Canton Zug, Switzerland, have invented a certain new and useful Window-Fastener; and we do hereby declare Vthe following to be a full, clear, and eXact description of the invention, such as will enable others skilled inthe art to which it appertainsto make and use the same, reference being had to the accompanying drawings, and to letters or figures marked thereon, which form a part of this specification.

The present invention relates to improvements in window fasteners and is particu-v cation, in which similar characters of refcfence indicate corresponding parts in all figures and in which: Figure 1 is a cross-section through a window frame to which the device is attached.

Fig. 2 shows the device in a side view partly in section. Fig. 3 shows an implement for use in combination with the novel device. Figs. 4-6 are detail views of the fastener on an enlarged scale, partly in elevation and artly lin section.

1 denotes the frame of'a window 2 which swings around a horizontal axis. On the frame 1 a bearing 3 is fastened by means of screws and in this bearing a double armed lever is j ournaled. One arm 4 of said lever has the shape of a ball and is considerably heavier than the other arm 5 of said lever. The free end of arm 5 forms a hook 6 pointing upwardly. The arm 5 passes through a cavity 7 of the frame 1 and projects from the face 8 of frame 1. The outer frame 9 in which the window 2 is journaled is provided with a cavity 10 which is partly closed by a plate 11. The arrangement and form of hook 6 and plate 11 is such that the hook 6 enters in the cavity 10 and passes automatically behind said plate 11 when the window is closed. The weight 4 holds the hook 6 in its locking position. The arm 4 has a recess 12 in which a bar 13 of a ring 14 may be inserted. The ring 14 is fastened to a handle 15.

To open the window 2' the handle 13 is pressed between the frame 1 and the weight 4 into the recess 12. rlhe lever 4, 5 swings out thereby the hook 6 frees the plate 11 and the window 2 resting all the while on the ring 14 may be let down until it rests on a stop. In this position the ring 14 may be easily withdrawn. To close the window 2v it is only necessary to swing it upwardly.

The device is very simple in construction, can be cheaply manufacturedv and readily applied, is not liable to get out of order. It operates in a very satisfactory manner to accomplish the end for which it is designed.

TheV double armed lever maybe made adjustable so that its length may be varied to suit requirements.

What we claim is:

In a window lock of the character described, the combination of a recessed sash and a window frame provided with an opening, a two-armed lever, a plate covering said opening and providing a bearing for said lever, one arin of said lever being adapted to be guided through said opening into said recess, a hook at the inner end' of said arm adapted to engage the front wall of said recess, a Vweight forming the second arm of said lever and being provided with a recess adapted to receive a'tool for fastening and unfastening the window from a distance, substantially as described and for the purpose'set forth.

In testimony whereof we afIiX our signatures iny presence of two witnesses.

HUBERT ZOTZ.

ALOIS GRIESSL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. CJ 

